drivers/[n-z]*: Remove obsolete references to CONFIG_COMMANDS

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/drivers/nand/nand.c b/drivers/nand/nand.c
index 104a416..27b5792 100644
--- a/drivers/nand/nand.c
+++ b/drivers/nand/nand.c
@@ -23,7 +23,7 @@
 
 #include <common.h>
 
-#if ((CONFIG_COMMANDS & CFG_CMD_NAND) || defined(CONFIG_CMD_NAND)) && !defined(CFG_NAND_LEGACY)
+#if defined(CONFIG_CMD_NAND) && !defined(CFG_NAND_LEGACY)
 
 #include <nand.h>